package com.changgou.goods.service.impl;


import com.alibaba.fastjson.JSON;
import com.changgou.goods.dao.BrandMapper;
import com.changgou.goods.dao.CategoryMapper;
import com.changgou.goods.dao.SkuMapper;
import com.changgou.goods.dao.SpuMapper;
import com.changgou.goods.pojo.*;
import com.changgou.goods.service.SpuService;
import com.changgou.utils.IdWorker;
import com.github.pagehelper.PageHelper;
import com.github.pagehelper.PageInfo;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.StringUtils;
import tk.mybatis.mapper.entity.Example;

import java.util.Date;
import java.util.List;
import java.util.Map;
import java.util.Set;

/****
 * @Author:shenkunlin
 * @Description:Spu业务层接口实现类
 * @Date 2019/6/14 0:16
 *****/
@Service
public class SpuServiceImpl implements SpuService {

    @Autowired
    private IdWorker idWorker;

    @Autowired
    private CategoryMapper categoryMapper;

    @Autowired
    private BrandMapper brandMapper;


    @Autowired
    private SpuMapper spuMapper;

    @Autowired
    private SkuMapper skuMapper;


    /**
     * Spu条件+分页查询
     *
     * @param spu  查询条件
     * @param page 页码
     * @param size 页大小
     * @return 分页结果
     */
    @Override
    public PageInfo<Spu> findPage(Spu spu, int page, int size) {
        //分页
        PageHelper.startPage(page, size);
        //搜索条件构建
        Example example = createExample(spu);
        //执行搜索
        return new PageInfo<Spu>(spuMapper.selectByExample(example));
    }

    /**
     * Spu分页查询
     *
     * @param page
     * @param size
     * @return
     */
    @Override
    public PageInfo<Spu> findPage(int page, int size) {
        //静态分页
        PageHelper.startPage(page, size);
        //分页查询
        return new PageInfo<Spu>(spuMapper.selectAll());
    }

    /**
     * Spu条件查询
     *
     * @param spu
     * @return
     */
    @Override
    public List<Spu> findList(Spu spu) {
        //构建查询条件
        Example example = createExample(spu);
        //根据构建的条件查询数据
        return spuMapper.selectByExample(example);
    }


    /**
     * Spu构建查询对象
     *
     * @param spu
     * @return
     */
    public Example createExample(Spu spu) {
        Example example = new Example(Spu.class);
        Example.Criteria criteria = example.createCriteria();
        if (spu != null) {
            // 主键
            if (!StringUtils.isEmpty(spu.getId())) {
                criteria.andEqualTo("id", spu.getId());
            }
            // 货号
            if (!StringUtils.isEmpty(spu.getSn())) {
                criteria.andEqualTo("sn", spu.getSn());
            }
            // SPU名
            if (!StringUtils.isEmpty(spu.getName())) {
                criteria.andLike("name", "%" + spu.getName() + "%");
            }
            // 副标题
            if (!StringUtils.isEmpty(spu.getCaption())) {
                criteria.andEqualTo("caption", spu.getCaption());
            }
            // 品牌ID
            if (!StringUtils.isEmpty(spu.getBrandId())) {
                criteria.andEqualTo("brandId", spu.getBrandId());
            }
            // 一级分类
            if (!StringUtils.isEmpty(spu.getCategory1Id())) {
                criteria.andEqualTo("category1Id", spu.getCategory1Id());
            }
            // 二级分类
            if (!StringUtils.isEmpty(spu.getCategory2Id())) {
                criteria.andEqualTo("category2Id", spu.getCategory2Id());
            }
            // 三级分类
            if (!StringUtils.isEmpty(spu.getCategory3Id())) {
                criteria.andEqualTo("category3Id", spu.getCategory3Id());
            }
            // 模板ID
            if (!StringUtils.isEmpty(spu.getTemplateId())) {
                criteria.andEqualTo("templateId", spu.getTemplateId());
            }
            // 运费模板id
            if (!StringUtils.isEmpty(spu.getFreightId())) {
                criteria.andEqualTo("freightId", spu.getFreightId());
            }
            // 图片
            if (!StringUtils.isEmpty(spu.getImage())) {
                criteria.andEqualTo("image", spu.getImage());
            }
            // 图片列表
            if (!StringUtils.isEmpty(spu.getImages())) {
                criteria.andEqualTo("images", spu.getImages());
            }
            // 售后服务
            if (!StringUtils.isEmpty(spu.getSaleService())) {
                criteria.andEqualTo("saleService", spu.getSaleService());
            }
            // 介绍
            if (!StringUtils.isEmpty(spu.getIntroduction())) {
                criteria.andEqualTo("introduction", spu.getIntroduction());
            }
            // 规格列表
            if (!StringUtils.isEmpty(spu.getSpecItems())) {
                criteria.andEqualTo("specItems", spu.getSpecItems());
            }
            // 参数列表
            if (!StringUtils.isEmpty(spu.getParaItems())) {
                criteria.andEqualTo("paraItems", spu.getParaItems());
            }
            // 销量
            if (!StringUtils.isEmpty(spu.getSaleNum())) {
                criteria.andEqualTo("saleNum", spu.getSaleNum());
            }
            // 评论数
            if (!StringUtils.isEmpty(spu.getCommentNum())) {
                criteria.andEqualTo("commentNum", spu.getCommentNum());
            }
            // 是否上架
            if (!StringUtils.isEmpty(spu.getIsMarketable())) {
                criteria.andEqualTo("isMarketable", spu.getIsMarketable());
            }
            // 是否启用规格
            if (!StringUtils.isEmpty(spu.getIsEnableSpec())) {
                criteria.andEqualTo("isEnableSpec", spu.getIsEnableSpec());
            }
            // 是否删除
            if (!StringUtils.isEmpty(spu.getIsDelete())) {
                criteria.andEqualTo("isDelete", spu.getIsDelete());
            }
            // 审核状态
            if (!StringUtils.isEmpty(spu.getStatus())) {
                criteria.andEqualTo("status", spu.getStatus());
            }
        }
        return example;
    }

    /**
     * 删除
     *
     * @param id
     */
    @Override
    public void delete(Long id) {
        spuMapper.deleteByPrimaryKey(id);
    }

    /**
     * 修改Spu
     *
     * @param spu
     */
    @Override
    public void update(Spu spu) {
        spuMapper.updateByPrimaryKey(spu);
    }

    /**
     * 增加Spu
     *
     * @param spu
     */
    @Override
    public void add(Spu spu) {
        spuMapper.insert(spu);
    }

    /**
     * 根据ID查询Spu
     *
     * @param id
     * @return
     */
    @Override
    public Spu findById(Long id) {
        return spuMapper.selectByPrimaryKey(id);
    }

    /**
     * 查询Spu全部数据
     *
     * @return
     */
    @Override
    public List<Spu> findAll() {
        return spuMapper.selectAll();
    }


    /**
     * 添加商品
     *
     * @param goods
     */
    @Override
    public void saveGoods(Goods goods) {

        Spu spu = goods.getSpu();

        if (StringUtils.isEmpty(spu.getId())) {
            //增加Spu
            spu.setId(idWorker.nextId());
            //商品未审核
            spu.setStatus("0");
            spuMapper.insertSelective(spu);
        } else {
            //修改 商品  修改spu   删除原来的sku  然后再进行添加
            spuMapper.updateByPrimaryKeySelective(spu);
            Sku sku = new Sku();
            sku.setSpuId(spu.getId());
            skuMapper.delete(sku);
        }


        //增加Sku
        Date date = new Date();
        Category category = categoryMapper.selectByPrimaryKey(spu.getCategory3Id());
        Brand brand = brandMapper.selectByPrimaryKey(spu.getBrandId());
        //获取sku集合
        List<Sku> skuList = goods.getSkuList();
        //循环将数据加到数据库
        if (skuList != null && skuList.size() > 0) {
            for (Sku sku : skuList) {
                //构建sku名称 采用spu+规格组装
                if (StringUtils.isEmpty(sku.getSpec())) {
                    sku.setSpec("{}");
                }
                //获取spu的名字
                String name = spu.getName()+" " +spu.getCaption();//名字加副标题
                //将规格转换成map

                Map<String, String> specMap = JSON.parseObject(sku.getSpec(), Map.class);

                //循环组装名字
                Set<String> keySet = specMap.keySet();
                for (String key : keySet) {
                    name += " " +specMap.get(key);
                }
                sku.setName(name);
                //Id
                sku.setId(idWorker.nextId());
                //spuId
                sku.setSpuId(spu.getId());
                //创建日期
                sku.setCreateTime(date);
                //修改日期
                sku.setUpdateTime(date);
                //商品分类ID
                sku.setCategoryId(spu.getCategory3Id());
                //分类名字
                sku.setCategoryName(category.getName());
                //品牌名字
                sku.setBrandName(brand.getName());
                //状态未审核
                sku.setStatus("0");
                //增加
                skuMapper.insertSelective(sku);

            }

        }


    }

    /**
     * 通过spuId查询商品
     *
     * @param spuId
     * @return
     */
    @Override
    public Goods findGoodsById(Long spuId) {
        Spu spu = spuMapper.selectByPrimaryKey(spuId);
        Sku sku = new Sku();
        sku.setSpuId(spuId);
        List<Sku> skuList = skuMapper.select(sku);
        Goods goods = new Goods();
        goods.setSpu(spu);
        goods.setSkuList(skuList);
        return goods;
    }

    /**
     * 商品审核
     *
     * @param spuId
     */
    @Override
    public void audit(Long spuId) {
        audit(spuId, "1");
    }

    /**
     * 商品审核
     *
     * @param spuId
     * @param status
     */
    @Override
    public void audit(Long spuId, String status) {
        Spu spu = spuMapper.selectByPrimaryKey(spuId);
        if ("1".equals(spu.getIsDelete())) {
            throw new RuntimeException("该商品已经被删除！");
        }

        //实现上架和审核
        spu.setStatus(status);//审核通过
        spuMapper.updateByPrimaryKeySelective(spu);
    }

    @Override
    public void pull(Long spuId) {
        Spu spu = spuMapper.selectByPrimaryKey(spuId);
        if(spu.getIsDelete().equals("1")){
            throw new RuntimeException("此商品已删除！");
        }
        spu.setIsMarketable("0");//下架状态
        spuMapper.updateByPrimaryKeySelective(spu);
    }

    @Override
    public void put(Long spuId) {
        Spu spu = spuMapper.selectByPrimaryKey(spuId);
        if(spu.getIsDelete().equals("1")){
            throw new RuntimeException("此商品已删除！");
        }
        if(!"1".equals(spu.getStatus())){
            throw new RuntimeException("未通过审核的商品不能！");
        }
        spu.setIsMarketable("1");//上架状态
        spuMapper.updateByPrimaryKeySelective(spu);
    }

    @Override
    public void isShow(Long spuId, String isMarketable) {
        Spu spu = spuMapper.selectByPrimaryKey(spuId);
        if ("1".equals(isMarketable)){  // 上架操作
            if ("1".equals(spu.getIsDelete()) || !"1".equals(spu.getStatus())){
                // 删除的 or 未审核的
                throw new RuntimeException("该商品不能上架");
            }
        }else{  // 下架操作
            if("1".equals(spu.getIsDelete())){
                throw new RuntimeException("已删除的商品无法下架");
            }
        }
        spu.setIsMarketable(isMarketable);
        spuMapper.updateByPrimaryKeySelective(spu);
    }


}
